L'injection intramusculaire est certainement la plus recommande, car la plus efficace
Dietary supplements and weight control in a middle-age population
Dietary optimisation represents the first-line approach for maintaining adequate B12 status: Encourage consumption of B12-rich foods: meat, poultry, fish, eggs, dairy products For vegetarians and vegans, recommend fortified foods (cereals, plant-based milk alternatives) or supplementation Address any gastrointestinal symptoms that may be limiting dietary intake Supplementation strategies depend on the severity of deficiency and absorption capacity, following British Society of Haematology and BNF guidance: Oral B12 supplementation may be appropriate for mild deficiency or prevention in at-risk individuals with intact absorption, with dosing according to local protocols Intramuscular hydroxocobalamin injections are indicated for confirmed deficiency: With neurological involvement: 1 mg on alternate days until no further improvement, then 1 mg every 2 months Without neurological involvement: 1 mg three times a week for 2 weeks, then 1 mg every 3 months Patient safety advice includes: Contact your GP if you develop persistent tingling, numbness, unusual fatigue, memory problems, or mood changes Inform healthcare providers of all medications, including over-the-counter supplements Attend scheduled blood test appointments for diabetes and nutritional monitoring Do not stop prescribed medications without medical advice Report any suspected side effects to the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk or via the Yellow Card app) Healthcare professionals should adopt an individualised approach , considering the patient's complete medication profile, dietary habits, symptom burden, and laboratory findings
Domes et al., 2006
However, the oral dose of vitamin B12 of 100 mcg was continued for a month, and the patient was advised to increase their dietary intake of vitamin B12 from animal or fortified foods
